EP0387947A2
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EP
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Thermoplastic elastomeric block polymers
Assignee: Shell Internationale Research Maatschappij BV
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Filing: 1990-03-07
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Granted: —
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Expires: 2010-03-07
Abstract
Abstract Thermoplastic elastomeric block copolymers of general formula BDB′ (I) or of general formula (B˝E) n X, wherein each of B,B′, B˝ comprises a substantially linear, substantially pure polyethylene block, having a melting temperature ≧ 110°C, as determined via differential scanning calorimetry; D and E are substantially linear elastomeric polymer blocks being, substantially free from olefinic unsaturation; the molecular weight distribution ( M w / M n ) of B,BD, BDB′, B˝ and B˝E is ≦ 2; X is a terminal coupling agent-based entity and n is an integer ≧ 2.
Inventors
- 👤 Adriaan Albert Van Der Huizen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 06:24
CPC Classifications
C; C08; C08F; C08F297/00; C08F297/02; C08F8/00; C08F8/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
93 words
Thermoplastic elastomeric block copolymers of general formula BDB′ (I) or of general formula (B˝E) n X, wherein each of B, B′ and B˝ comprises a substantially linear, substantially pure polyethylene block, having a melting temperature ≧ 110°C, as determined via differential scanning calorimetry; D and E are substantially linear elastomeric polymer blocks, being substantially free from olefinic unsaturation; the molecular weight distribution ( M w / M n ) of B, BD, BDB′, B˝ and B˝E is ≦ 2; X is a terminal coupling agent-based entity and n is an integer ≧ 2.
Claim 2
Dependent Claim
93 words
Thermoplastic elastomeric block copolymers of general formula BDB′ (I) or of general formula (B˝E) n X, wherein each of B, B′ and B˝ comprises a substantially linear, substantially pure polyethylene block, having a melting temperature ≧ 110°C, as determined via differential scanning calorimetry; D and E are substantially linear elastomeric polymer blocks, being substantially free from olefinic unsaturation; the molecular weight distribution ( M w / M n ) of B, BD, BDB′, B˝ and B˝E is ≦ 2; X is a terminal coupling agent-based entity and n is an integer ≧ 2.
Claim 3
Dependent Claim
81 words
Block polymers as claimed in claim 1, wherein the polymer blocks B, B′ and B˝ have a number average molecular weight ( M n ) in the range of from 5,000 to 250,000; the M n of the polymer blocks D is in the range of from 25,000 to 750,000; the M n of the polymer blocks E is in the range of from 10,000 to 400,000; and the endblocks comprise from 10 to 90% m of the corresponding block copolymer.
Claim 4
Dependent Claim
68 words
Block copolymer as claimed in claim 2, wherein the M n of the polymer blocks B, B′ and B˝ is in the range of from 10,000 to 100,000; block D has a M n in the range from 40,000 to 500,000; block E has a M n in the range from 20,000 to 250,000, and the endblocks comprise from 20 to 80% m of the corresponding block copolymers.
Claim 5
Dependent Claim
23 words
Block copolymers as claimed in any one of claims 1-3, wherein blocks B, B′ and B˝ have a melting temperature of ≧ 120°C.
Claim 6
Dependent Claim
145 words
A process for the preparation of thermoplastic elastomeric block copolymers as claimed in any one of claims 1-4, which comprise the preparation of elastomeric block copolymers of general formula B o D o B ′ o (III) or of the general formula (B ˝ o E o ) n X (IV), wherein each of blocks B o , B ′ o and B ˝ o comprises a substantially linear polybutadiene block having a 1,2-linkage content < 5 mol %; D o and E o are substantially linear, elastomeric homo-or copolymer blocks; the M w / M n of the B o , B o D o , B o D o B ′ o , B ˝ o , and B ˝ o E o is ≦ 2; and X and n have the same meaning as hereinbefore, and the subsequent substantially complete hydrogenation thereof.
Claim 7
Dependent Claim
33 words
A process as claimed in claim 5, wherein the blocks D o and E o are conjugated diene homo- or copolymer blocks based on conjugated dienes having from 4-8 carbon atoms per molecule.
Claim 8
Dependent Claim
81 words
A process as claimed in claim 6, wherein the blocks D o and E o are selected from the group comprising polybutadiene blocks having a 1,2-linkage content in the range of from 30-70 mol %, polyisoprene blocks having a 3,4-linkage content of less than 20 mol % and butadiene-isoprene copolymers blocks having a 1,2-linkage content in the butadiene fraction in the range of from 30-70 mol % and/or a 3,4-linkage content in the isoprene fraction of less than 20 mol %.
Claim 9
Dependent Claim
39 words
A process as claimed in any one of claims 5-7, wherein the hydrogenation is conducted at a temperature in the range of from 30 to 200°C and a pressure in the range of from atmospheric pressure to 100 bar.
Claim 10
Dependent Claim
19 words
A process as claimed in any one of claims 5-8, wherein the hydrogenation is conducted in an inert solvent.
Claim 11
Dependent Claim
14 words
A process as claimed in claim 9, wherein the solvent is a hydrocarbon solvent.
Claim 12
Dependent Claim
20 words
A process as claimed in any one of claims 5-10, wherein the hydrogenation is a nickel octoate/triethylaluminium based hydrogenation process.
Claim 13
Dependent Claim
23 words
A process as claimed in any one of claims 5-11, wherein at least 96% of the initially present olefinic unsaturation has been converted.
Claim 14
Dependent Claim
122 words
Elastomeric block copolymers of general formula B o D o B ′ o (III) or of general formula (B ˝ o E o ) n X (IV), wherein each B o , B ′ o and B ˝ o comprise a substantially linear poly 1,3-butadiene block having a 1,2-linkage content < 5 mol %, as determined via infrared spectroscopy, D o and E o are substantially linear elastomeric homo- or copolymers blocks; the M w / M n of the blocks B o , B o D o , B o D o B ′ o , B ˝ o and B ˝ o E o is ≦2, and X is a terminal coupling agent-based entity and n is an integer ≧2.
Claim 15
Dependent Claim
122 words
Elastomeric block copolymers of general formula B o D o B ′ o (III) or of general formula (B ˝ o E o ) n X (IV), wherein each B o , B ′ o and B ˝ o comprise a substantially linear poly 1,3-butadiene block having a 1,2-linkage content < 5 mol %, as determined via infrared spectroscopy, D o and E o are substantially linear elastomeric homo- or copolymers blocks; the M w / M n of the blocks B o , B o D o , B o D o B ′ o , B ˝ o and B ˝ o E o is ≦2, and X is a terminal coupling agent-based entity and n is an integer ≧2.
Claim 16
Dependent Claim
33 words
Block copolymers as claimed in claim 13, wherein the blocks D o and E o are conjugated diene homo- or copolymer blocks based on conjugated dienes having from 4-8 carbon atoms per molecule.
Claim 17
Dependent Claim
81 words
Block copolymers as claimed in claim 14, wherein the blocks D o and E o are selcted form the group comprising polybutadiene blocks having a 1,2-linkage content in the range of from 30-70 mol %, polyisoprene blocks having a 3,4-linkage content of less than 20 mol % and butadiene-isoprene copolymers blocks having a 1,2-linkage content in the butadiene fraction in the range of from 30-70 mol % and/or a 3,4-linkage content in the isoprene fraction of less than 20 mol %.
References Cited (Backward Citations)
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